Coupling for shafting.



PATENTED 1130.1, 1903.. E. J. THOMPSON. COUPLING FOR SHAFTING'.

APPLICATION TILED AUG. 21, 1902.

H0 MODEL.

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UNITED STATES Patented December 1, 1903.

PATENT EEicE.

EDWARD J. THOMPSON, OF BENNINGTON, NEW HAMPSHIRE, ASSIGNOR TO CHARLES H.KIMBALL AND FRED H. KIMBALL, OF BENNINGTON, NEW HAMPSHIRE, OOPARTNERSDOING BUSINESS AS 0. J. KIMBALL COM- PANY, A FIRM.

COUPLING FOR SHAFTING.

$PECIFICATION forming part of Letters Patent No. 745,690, dated December1, 1903.

Application filed August 21, 1902. Serial No. 120,456. (No model.)

To a, whom it may concern:

Be it known that I, EDWARD J. THOMPSON, of Bennington, in the county ofHillsboro and State of New Hampshire, have invented a certain newanduseful Coupling for Shafting, of

which the following is a specification.

The object of my invention is to producea simple, cheap, andefficientcoupling, and this object I attain by the means and in the man- IO nerhereinafter described, and illustrated in the accompanying drawings, inwhich Figure 1 is a longitudinal section, and Fig.

2 an end view, of my improved coupling, similar letters of referencereferring to similar parts in the two figures. v

S and S are the ends of two pieces of shafting which are to be coupledor joined together and which may be of the same or different diameters.

A is a tubular sleeve having a bore eccen trio to its axis and larger indiameter than the shafting, and for greater strength the bore is madewith its longitudinal center on one side of the axis of the sleeve forhalf its length and for the other half on the opposite side.

B and O and B and C are two pairs of semicylindrical wedges which fitaround the ends of the shafting within the sleeve, each pair of wedgesaround one piece of the shafting, and are forced around within thesleeveand made to lock the ends of the shafting therein by means of thetapering screws D and D, working, respectively, between thescrewthreaded bases of each pair of wedges.

It is desirable that when the shafting is coupled together the axis ofeach piece and that of the sleeve shall coincide as nearly as possible,and it is obvious how the eccentric o bore of the sleeve should belocated with relation to its axis and how the semicylindrical wedgesshould be placed within the sleevewhen the parts are assembled to securethe proper adjustment. The keys or splines E and E,seated inlongitudinal keyways formed in the inner'surface of the sleeve on theline which is nearest to its axis, serve to indicate the line whichshould separate the edges of the wedges and assure theirpropel-placement within the sleeve. These keys may, if desired, be madehigh enough so that their inner edges will fit within keyways formedalong one side of each piece of shafting, and thereby further increasethe efficiency of the coupling.

It will be understood that I do not limit myself to the specific formand arrangement of parts shown and described, since the same may bemodified in various ways without departing from the spirit of myinvention or sacrificing any ofthe advantages thereof.

What I claim as new, and desire to secure by Letters Patent, is-

A coupling, consisting of a sleeve with bore eccentric to its axis andto one side thereof for half its length and to the opposite side thereoffor the rest of its length, a. pair of semicylindrical wedges fittingwithin each end of the sleeve, a key seated in a keyway formed in eachend of the sleeve along the line of the bore which is nearest to theaxis, and a tapering screw between the screw-threaded bases of each pairof wedges, substantially as de scribed.

In testimony whereof I have affixed my sig nature in presence of twowitnesses.

EDWVARD J. THOMPSON. Witnesses:

CHAS. H. KIMBALL, FRED H. KIMBALL.

